barcodes/validation/validate.go

package validation

import (
	"fmt"

	"git.fjla.uk/fred.boniface/barcodes/generation"
)

func Validate(params generation.Parameters) bool {
	rule, exists := FormatRules[string(params.Format)]
	if !exists {
		fmt.Printf("Error: No rule found for format '%s'\n", params.Format)
		return false
	}

	if uint64(len(params.Content)) < rule.minLength || uint64(len(params.Content)) > rule.maxLength {
		fmt.Printf("Validation Error: Length must be between %d and %d\n", rule.minLength, rule.maxLength)
		return false
	}

	if !rule.charset.MatchString(params.Content) {
		fmt.Println("Validation Error: Contains illegal characters")
		return false
	}

	if uint64(len(params.Content))%uint64(rule.divisible) != 0 {
		fmt.Printf("Validation Error: Length must be a multiple of %d", rule.divisible)
		return false
	}

	fmt.Printf("Validation passed for barcode type %s\n", params.Format)
	return true
}